Kommission Önologie

Adopted

Total acidity (Type-IV)

OIV-MA-F1-05 Total acidity

Type IV method

 

  1. Definition

The total acidity of the rectified concentrated must is the sum of its titrable acidities when it is titrated to pH 7 against a standard alkaline solution.

Carbon dioxide is not included in the total acidity.

Determination of the acquired alcoholic strength by volume (ASV) of concentrated musts (CM) and grape sugar (or rectified concentrated musts, RCM) (Oeno 419A-2011) (Type-IV)

OIV-MA-F1-03 Determination of the acquired alcoholic strength by volume (ASV) of concentrated musts (CM) and grape sugar (or rectified concentrated musts, RCM)

Type IV method

 

Conductivity (Type-IV)

OIV-MA-F1-01 Conductivity

Type IV method

  1. Principle

The electrical conductivity of a column of liquid defined by two parallel platinum electrodes at its ends is measured by incorporating it in one arm of a Wheatstone bridge.

The conductivity varies with temperature and it is therefore expressed at 20°C.

Kommission Önologie abonnieren